<template>
    <div class="list" ref="wrapper">
      <div>
        <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
          <div class="button">{{this.$store.state.city}}</div>
          </div>
        </div>
      </div>
        <div class="area">
          <div class="title boredr-topbottom">热门城市</div>
          <div class="button-list">
            <div class="button-wrapper"
                 v-for="item of hot"
                 :key="item.id"
                 @click="handleCityClick(item.name)"
                >
              <div class="button">{{item.name}}</div>
            </div>
          </div>
        </div>
      <div class="area" v-for="(item,key) of cities"
           :key="key"
           :ref='key'>
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list"
             v-for="innerItem of item"
             :key="innerItem.id"
             @click="handleCityClick(innerItem.name)">
          <div class="item  border-topbottom">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
   </div>
    </div>
</template>

<script>
import BScroll from 'better-scroll'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  methods: {
    handleCityClick (city) {
      this.$store.commit('changeCity', city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>

<style lang='stylus' scoped>
  .border-topbottom
  &:before
   border-color:#ccc
  &:after
   boder-color:#ccc
   .list{
     overflow: hidden;
     position: absolute;
     top: 1.58rem;
     left: 0;
     right: 0;
     bottom: 0;
   }
  .title{
    line-height: .54rem;
    background: #eee;
    padding-left: .2rem;
    color: #666;
    font-size: .26rem;
  }
  .button-list{
    padding: .1rem .6rem .1rem .1rem;
    overflow: hidden;
  }
  .button-wrapper{
    width: 33.3%;
    float: left;
  }
  .button{
    text-align: center;
    padding: .1rem 0;
    margin: .1rem;
    border: .02rem solid #ccc;
    border-radius: .06rem;
  }
  .item{
    line-height: .76rem;
    padding-left: .2rem;
  }

</style>
